Optimizing the interfacial potential distribution to mitigate high transient potential induced dissolution on C/Ti coated metal bipolar plates used in PEMFCs

Xian Zong Wang; Meng Meng Zhang; Qian Hu; Shuo Su; Hong Qiang Fan; Haifeng Wang; Jing Li Luo

doi:10.1016/j.corsci.2022.110686

Optimizing the interfacial potential distribution to mitigate high transient potential induced dissolution on C/Ti coated metal bipolar plates used in PEMFCs

Xian Zong Wang, Meng Meng Zhang, Qian Hu, Shuo Su, Hong Qiang Fan, Haifeng Wang, Jing Li Luo

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

Developing a conductive and corrosion-resistant coating on metal bipolar plates is essential to mitigate the degradation induced by the high cathodic transient potentials of proton exchange membrane fuel cells. In this work, a multilayer nanoscale C/Ti coating is prepared on SS316L (C/Ti/SS). The C/Ti/SS achieves a highly prominent ICR of 1.59 mΩ cm² and corrosion rate of 2 × 10^–8 A/cm², remarkably better than the targets. Analysis of coating microstructure and composition suggests that the significantly enhanced corrosion resistance is attributed to the diffusional interfaces which optimize the potential distribution across the coating and improve the transpassive potential of C/Ti/SS.

Original language	English
Article number	110686
Journal	Corrosion Science
Volume	208
DOIs	https://doi.org/10.1016/j.corsci.2022.110686
State	Published - Nov 2022

Keywords

C/Ti coating
Cathodic transient potentials
Corrosion resistance
Interfacial contact resistance
Metal bipolar plates
Proton exchange membrane fuel cells

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10.1016/j.corsci.2022.110686

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title = "Optimizing the interfacial potential distribution to mitigate high transient potential induced dissolution on C/Ti coated metal bipolar plates used in PEMFCs",

abstract = "Developing a conductive and corrosion-resistant coating on metal bipolar plates is essential to mitigate the degradation induced by the high cathodic transient potentials of proton exchange membrane fuel cells. In this work, a multilayer nanoscale C/Ti coating is prepared on SS316L (C/Ti/SS). The C/Ti/SS achieves a highly prominent ICR of 1.59 mΩ cm2 and corrosion rate of 2 × 10–8 A/cm2, remarkably better than the targets. Analysis of coating microstructure and composition suggests that the significantly enhanced corrosion resistance is attributed to the diffusional interfaces which optimize the potential distribution across the coating and improve the transpassive potential of C/Ti/SS.",

keywords = "C/Ti coating, Cathodic transient potentials, Corrosion resistance, Interfacial contact resistance, Metal bipolar plates, Proton exchange membrane fuel cells",

author = "Wang, {Xian Zong} and Zhang, {Meng Meng} and Qian Hu and Shuo Su and Fan, {Hong Qiang} and Haifeng Wang and Luo, {Jing Li}",

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year = "2022",

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doi = "10.1016/j.corsci.2022.110686",

language = "英语",

volume = "208",

journal = "Corrosion Science",

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T1 - Optimizing the interfacial potential distribution to mitigate high transient potential induced dissolution on C/Ti coated metal bipolar plates used in PEMFCs

AU - Wang, Xian Zong

AU - Zhang, Meng Meng

AU - Hu, Qian

AU - Su, Shuo

AU - Fan, Hong Qiang

AU - Wang, Haifeng

AU - Luo, Jing Li

PY - 2022/11

Y1 - 2022/11

N2 - Developing a conductive and corrosion-resistant coating on metal bipolar plates is essential to mitigate the degradation induced by the high cathodic transient potentials of proton exchange membrane fuel cells. In this work, a multilayer nanoscale C/Ti coating is prepared on SS316L (C/Ti/SS). The C/Ti/SS achieves a highly prominent ICR of 1.59 mΩ cm2 and corrosion rate of 2 × 10–8 A/cm2, remarkably better than the targets. Analysis of coating microstructure and composition suggests that the significantly enhanced corrosion resistance is attributed to the diffusional interfaces which optimize the potential distribution across the coating and improve the transpassive potential of C/Ti/SS.

AB - Developing a conductive and corrosion-resistant coating on metal bipolar plates is essential to mitigate the degradation induced by the high cathodic transient potentials of proton exchange membrane fuel cells. In this work, a multilayer nanoscale C/Ti coating is prepared on SS316L (C/Ti/SS). The C/Ti/SS achieves a highly prominent ICR of 1.59 mΩ cm2 and corrosion rate of 2 × 10–8 A/cm2, remarkably better than the targets. Analysis of coating microstructure and composition suggests that the significantly enhanced corrosion resistance is attributed to the diffusional interfaces which optimize the potential distribution across the coating and improve the transpassive potential of C/Ti/SS.

KW - C/Ti coating

KW - Cathodic transient potentials

KW - Corrosion resistance

KW - Interfacial contact resistance

KW - Metal bipolar plates

KW - Proton exchange membrane fuel cells

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U2 - 10.1016/j.corsci.2022.110686

DO - 10.1016/j.corsci.2022.110686

M3 - 文章

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SN - 0010-938X

VL - 208

JO - Corrosion Science

JF - Corrosion Science

M1 - 110686

ER -

Optimizing the interfacial potential distribution to mitigate high transient potential induced dissolution on C/Ti coated metal bipolar plates used in PEMFCs

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